C*-algebras generated by radial Toeplitz operators on polyanalytic weighted Bergman spaces

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Auteurs principaux: Barrera-Castelán, Roberto Moisés, Maximenko, Egor A., Ramos-Vazquez, Gerardo
Format: Preprint
Publié: 2023
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author Barrera-Castelán, Roberto Moisés
Maximenko, Egor A.
Ramos-Vazquez, Gerardo
author_facet Barrera-Castelán, Roberto Moisés
Maximenko, Egor A.
Ramos-Vazquez, Gerardo
contents In a previous paper (Radial operators on polyanalytic weighted Bergman spaces, Bol. Soc. Mat. Mex. 27, 43), using disk polynomials as an orthonormal basis in the $n$-analytic weighted Bergman space, we showed that for every bounded radial generating symbol $a$, the associated Toeplitz operator, acting in this space, can be identified with a matrix sequence $γ(a)$, where the entries of the matrices are certain integrals involving $a$ and Jacobi polynomials. In this paper, we suppose that the generating symbols $a$ have finite limits on the boundary and prove that the C*-algebra generated by the corresponding matrix sequences $γ(a)$ is the C*-algebra of all matrix sequences having scalar limits at infinity. We use Kaplansky's noncommutative analog of the Stone--Weierstrass theorem and some ideas from several papers by Loaiza, Lozano, Ramírez-Ortega, Ramírez-Mora, and Sánchez-Nungaray. We also prove that for $n\ge 2$, the closure of the set of matrix sequences $γ(a)$ is not equal to the generated C*-algebra.
format Preprint
id arxiv_https___arxiv_org_abs_2306_06231
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle C*-algebras generated by radial Toeplitz operators on polyanalytic weighted Bergman spaces
Barrera-Castelán, Roberto Moisés
Maximenko, Egor A.
Ramos-Vazquez, Gerardo
Operator Algebras
Functional Analysis
47L80, 47B35, 22D25, 30H20, 30G20, 33C45
In a previous paper (Radial operators on polyanalytic weighted Bergman spaces, Bol. Soc. Mat. Mex. 27, 43), using disk polynomials as an orthonormal basis in the $n$-analytic weighted Bergman space, we showed that for every bounded radial generating symbol $a$, the associated Toeplitz operator, acting in this space, can be identified with a matrix sequence $γ(a)$, where the entries of the matrices are certain integrals involving $a$ and Jacobi polynomials. In this paper, we suppose that the generating symbols $a$ have finite limits on the boundary and prove that the C*-algebra generated by the corresponding matrix sequences $γ(a)$ is the C*-algebra of all matrix sequences having scalar limits at infinity. We use Kaplansky's noncommutative analog of the Stone--Weierstrass theorem and some ideas from several papers by Loaiza, Lozano, Ramírez-Ortega, Ramírez-Mora, and Sánchez-Nungaray. We also prove that for $n\ge 2$, the closure of the set of matrix sequences $γ(a)$ is not equal to the generated C*-algebra.
title C*-algebras generated by radial Toeplitz operators on polyanalytic weighted Bergman spaces
topic Operator Algebras
Functional Analysis
47L80, 47B35, 22D25, 30H20, 30G20, 33C45
url https://arxiv.org/abs/2306.06231